DelegationToken (Apache Accumulo Core 3.0.0 API)

All Superinterfaces:

AuthenticationToken, Cloneable, Destroyable, org.apache.hadoop.io.Writable

All Known Implementing Classes:

DelegationTokenImpl
```
public interface DelegationToken
extends AuthenticationToken
```
An AuthenticationToken that wraps a "Hadoop style" delegation token created by Accumulo. The intended scope of this token is when a KerberosToken cannot be used instead. The most common reason for this is within YARN jobs. The Kerberos credentials of the user are not passed over the wire to the job itself. The delegation token serves as a mechanism to obtain a transient shared secret with Accumulo using a KerberosToken and then run some task authenticating with that shared secret.
Obtain a delegation token by calling SecurityOperations.getDelegationToken(org.apache.accumulo.core.client.admin.DelegationTokenConfig)

Since:

1.7.0

- Nested Class Summary
  - Nested classes/interfaces inherited from interface org.apache.accumulo.core.client.security.tokens.AuthenticationToken
    AuthenticationToken.AuthenticationTokenSerializer, AuthenticationToken.Properties, AuthenticationToken.TokenProperty
- Method Summary
  - Methods inherited from interface org.apache.accumulo.core.client.security.tokens.AuthenticationToken
    clone, getProperties, init
  - Methods inherited from interface javax.security.auth.Destroyable
    destroy, isDestroyed
  - Methods inherited from interface org.apache.hadoop.io.Writable
    readFields, write